Sillaginopsis panijus
| Gangetic whiting | |
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Not evaluated (IUCN 3.1)
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Perciformes |
| Suborder: | Percoidei |
| Superfamily: | Percoidea |
| Family: | Sillaginidae |
| Genus: |
Sillaginopsis T. N. Gill, 1861 |
| Species: | S. panijus |
| Binomial name | |
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Sillaginopsis panijus (Hamilton, 1822) |
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| Range of Gangetic whiting in dark blue | |
| Synonyms | |
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Sillago panijus Hamilton, 1822 |
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Sillago panijus Hamilton, 1822
Cheilodipterus panijus Hamilton, 1822
Sillaginopsis domina Cuvier, 1829
Sillago domina Cuvier, 1829
The Gangetic whiting, Sillaginopsis panijus (also known as the flathead sillago), is a species of inshore marine and estuarine fish of the smelt-whiting family, Sillaginidae. It is the most distinctive Asian member of the family due to its flattened head and trailing dorsal fins. Although first described in 1822, it was not placed in its own genus until 1861 when Theodore Gill erected Sillaginopsis, a genus which is still monotypic. Gangetic whiting are of minor commercial importance along the Southeast coast of the Asian continent where it inhabits protected areas.
The Gangetic whiting is the only species of the genus Sillaginopsis, which itself is one of three genera the family Sillaginidae, containing all the smelt whitings. The Sillaginidae are part of the Percoidei, a suborder of the order Perciformes.
The Gangetic whiting was originally named Cheilodipterus panijus in 1822 by Francis Buchanan-Hamilton from a holotype taken from the Ganges estuary in India. The species was further examined by Gill in 1861 in the first review of the family, entitled "Synopsis of the Sillaginoids", which led to the creation of the genus Sillaginopsis. This new classification changed the binomial name to the currently accepted Sillaginopsis panijus.
The distinct appearance of the Gangetic whiting makes it the easiest of the smelt whitings to identify. The head of the species is highly depressed, like that of the flatheads, with very small eyes well constricted by the orbits. The first dorsal fin contains ten spines including a large trailing second spine; the second dorsal fin has one spine and 25 to 27 soft rays. The anal fin has two spines and 24 to 27 soft rays. There are 84 to 90 lateral line scales and the species has a total of 42 vertebrae. The species is known to grow to a length of 44 cm.
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